M-shaped boat hull



FIG. 1 of the drawings is a perspective view showing the top, front, and left side of an M-shaped boat hull embodying the design of our invention;

FIG. 2 is a perspective view showing the bottom, rear, and right side of the M-shaped boat hull;

FIG. 3 is a front elevation view;

FIG. 4 is a top plan view;

FIG. 5 is a left side elevation view;

FIG. 6 is a right side elevation view;

FIG. 7 is a rear elevation view; and,

FIG. 8 is a bottom plan view. 

We claim the ornamental design for an M-shaped boat hull, as shown and described. 